apache/iceberg-cpp
Apr 2025 – Jan 2026
6 Months active
Languages Used
C++JSONCMake
Technical Skills
API DesignC++C++ DevelopmentData EngineeringData SerializationData Structures
Guotao Yu
PROFILE
Guotao Yu
Guotao worked on the apache/iceberg-cpp repository, delivering core features for Iceberg table management and schema evolution over six months. He developed modular partitioning and transform systems, implemented an in-memory catalog for efficient metadata operations, and built foundational table scanning and metadata update interfaces. His approach emphasized robust API design, error handling, and validation, using C++ and JSON serialization to ensure data integrity and cross-system compatibility. Guotao also introduced flexible schema evolution capabilities, enabling safe column modifications and migrations. The work demonstrated depth in distributed data engineering, with careful attention to maintainability, extensibility, and the evolving needs of analytics workloads.
Overall Statistics
Feature vs Bugs
92%Features
Repository Contributions
17Total
Bugs
1
Commits
17
Features
12
Lines of code
10,832
Activity Months6
Your Network
28 peopleWork History
January 2026
3 Commits • 1 Features
Jan 1, 2026Monthly summary for 2026-01: Apache Iceberg C++ delivered Schema Evolution: Flexible Column Management to enable safer and more flexible schema changes. The work focused on implementing add, delete, update, and move column capabilities with validations to prevent invalid changes, improving schema evolution workflows and data modeling flexibility. Key commits included: - e5eb6e001de73dc57b0ad14818c71609f6eae8f0 (feat: implement add column (#486)) - 34d5a1ddbedacb0a4d66f330385edea10b9b3360 (feat: implement update column (#498)) - bc2e0266eb428d058c1cf2e4d957ad6cb980a649 (feat: add move column to update schema (#517)) Overall, this work lays the foundation for end-to-end schema evolution, enabling safer migrations and better data modeling flexibility across workloads.
3 Commits • 1 Features
Jan 1, 2026Monthly summary for 2026-01: Apache Iceberg C++ delivered Schema Evolution: Flexible Column Management to enable safer and more flexible schema changes. The work focused on implementing add, delete, update, and move column capabilities with validations to prevent invalid changes, improving schema evolution workflows and data modeling flexibility. Key commits included: - e5eb6e001de73dc57b0ad14818c71609f6eae8f0 (feat: implement add column (#486)) - 34d5a1ddbedacb0a4d66f330385edea10b9b3360 (feat: implement update column (#498)) - bc2e0266eb428d058c1cf2e4d957ad6cb980a649 (feat: add move column to update schema (#517)) Overall, this work lays the foundation for end-to-end schema evolution, enabling safer migrations and better data modeling flexibility across workloads.
January 2026
December 2025
4 Commits • 3 Features
Dec 1, 2025December 2025 (2025-12) monthly summary for apache/iceberg-cpp: Focused on delivering robust schema evolution capabilities, strengthening metadata management, establishing a skeleton for future evolution APIs, and fixing a PartitionSpec deduplication bug. These efforts improved data reliability, schema integrity, and operational efficiency, while laying groundwork for future evolution work.
December 2025
4 Commits • 3 Features
Dec 1, 2025December 2025 (2025-12) monthly summary for apache/iceberg-cpp: Focused on delivering robust schema evolution capabilities, strengthening metadata management, establishing a skeleton for future evolution APIs, and fixing a PartitionSpec deduplication bug. These efforts improved data reliability, schema integrity, and operational efficiency, while laying groundwork for future evolution work.
October 2025
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Apache Iceberg C++ development focused on laying the groundwork for robust table metadata management. Delivered foundational interfaces and scaffolding enabling safe updates and validation of table metadata, setting the stage for future lifecycle features and more reliable data management.
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Apache Iceberg C++ development focused on laying the groundwork for robust table metadata management. Delivered foundational interfaces and scaffolding enabling safe updates and validation of table metadata, setting the stage for future lifecycle features and more reliable data management.
October 2025
July 2025
3 Commits • 3 Features
Jul 1, 2025July 2025 summary for apache/iceberg-cpp: Delivered foundational table scanning capabilities, dependency stabilization, and API enhancements that position the project for future query execution and analytics workloads. Focused on data-read planning based on table metadata and snapshots, while improving build stability with dependency upgrades and API usability.
July 2025
3 Commits • 3 Features
Jul 1, 2025July 2025 summary for apache/iceberg-cpp: Delivered foundational table scanning capabilities, dependency stabilization, and API enhancements that position the project for future query execution and analytics workloads. Focused on data-read planning based on table metadata and snapshots, while improving build stability with dependency upgrades and API usability.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for apache/iceberg-cpp: Delivered an in-memory Iceberg Catalog (MemoryCatalog) enabling namespace and table management. Implemented create/list/drop/exists operations for namespaces and tables, laying groundwork for fast in-memory metadata storage and retrieval and reducing metadata I/O for Iceberg workflows.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for apache/iceberg-cpp: Delivered an in-memory Iceberg Catalog (MemoryCatalog) enabling namespace and table management. Implemented create/list/drop/exists operations for namespaces and tables, laying groundwork for fast in-memory metadata storage and retrieval and reducing metadata I/O for Iceberg workflows.
May 2025
April 2025
5 Commits • 3 Features
Apr 1, 2025April 2025 (apache/iceberg-cpp) monthly summary: Key features delivered include Partitioning System Core and JSON Interoperability; Transform Function Architecture with API consistency; and Sort Configuration JSON Persistence. These changes enable flexible partition strategies, modular and maintainable transform pipelines, and reliable cross-system configuration exchange, respectively. No major bugs were reported in this dataset. Technologies demonstrated: C++, modular architecture (PartitionField/PartitionSpec, Transform and TransformFunction), Result<T> error handling, and JSON serialization/deserialization for configuration.
April 2025
5 Commits • 3 Features
Apr 1, 2025April 2025 (apache/iceberg-cpp) monthly summary: Key features delivered include Partitioning System Core and JSON Interoperability; Transform Function Architecture with API consistency; and Sort Configuration JSON Persistence. These changes enable flexible partition strategies, modular and maintainable transform pipelines, and reliable cross-system configuration exchange, respectively. No major bugs were reported in this dataset. Technologies demonstrated: C++, modular architecture (PartitionField/PartitionSpec, Transform and TransformFunction), Result<T> error handling, and JSON serialization/deserialization for configuration.
Activity
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Quality Metrics
Correctness92.4%
Maintainability88.8%
Architecture94.2%
Performance78.2%
AI Usage25.8%
Skills & Technologies
Programming Languages
C++CMakeJSON
Technical Skills
API DesignAPI DevelopmentBuild SystemsC++C++ DevelopmentData EngineeringData ManagementData SerializationData StructuresData ValidationDependency ManagementDeserializationDistributed SystemsError HandlingIceberg
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